Merge patch series "Resolve issues with booting distros on x86"

Simon Glass <sjg@chromium.org> says:

This little series reprises the EFI-video fix, fixes a USB problem and
enables a boot script for coreboot.

It also moves to truetype fonts for coreboot and qemu-x86, since the
menus look much better and there are no strong size constraints.

With these changes it is possible to boot a Linux distro automatically
with U-Boot on x86, including when U-Boot is the second-stage
bootloader.

1 files changed, 12 insertions, 0 deletions

diff --git a/arch/x86/cpu/x86_64/cpu.c b/arch/x86/cpu/x86_64/cpu.c
index 2647bff..5ea746e 100644
--- a/arch/x86/cpu/x86_64/cpu.c
+++ b/arch/x86/cpu/x86_64/cpu.c
@@ -10,6 +10,7 @@
 #include <init.h>
 #include <asm/cpu.h>
 #include <asm/global_data.h>
+#include <asm/processor-flags.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -39,11 +40,22 @@ int x86_mp_init(void)
 	return 0;
 }
 
+/* enable SSE features for hardware floating point */
+static void setup_sse_features(void)
+{
+	asm ("mov %%cr4, %%rax\n" \
+	"or  %0, %%rax\n" \
+	"mov %%rax, %%cr4\n" \
+	: : "i" (X86_CR4_OSFXSR | X86_CR4_OSXMMEXCPT) : "eax");
+}
+
 int x86_cpu_reinit_f(void)
 {
 	/* set the vendor to Intel so that native_calibrate_tsc() works */
 	gd->arch.x86_vendor = X86_VENDOR_INTEL;
 	gd->arch.has_mtrr = true;
+	if (IS_ENABLED(CONFIG_X86_HARDFP))
+		setup_sse_features();
 
 	return 0;
 }